code: def testConstructor(self):
      with self.assertRaises(TypeError):
          MPI.Intercomm(self.INTRACOMM)
      with self.assertRaises(TypeError):
          MPI.Intracomm(self.INTERCOMM)
  
imports: from mpi4py import MPI
  import mpiunittest
label_desc: Use image node_id 2 for calling the BaseTestIntercomm obj's underlying member method code with example usage: obj.testConstructor() without return types